Используя сведения о чётности тригонометрических функций, вычислите sin ⁡ ( − π 4 ) \sin\left(-\frac{\pi}{4}\right) sin ( − 4 π )

− 2 2 -\frac{\sqrt{2}}{2} − 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− sin ⁡ ( π 4 ) -\sin\left(\frac{\pi}{4}\right) − sin ( 4 π )

2 2 \frac{\sqrt{2}}{2} 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

sin ⁡ ( π 4 ) \sin\left(\frac{\pi}{4}\right) sin ( 4 π )

Используя сведения о чётности тригонометрических функций, вычислите cos ⁡ ( − π 6 ) \cos\left(-\frac{\pi}{6}\right) cos ( − 6 π )

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

cos ⁡ ( π 6 ) \cos\left(\frac{\pi}{6}\right) cos ( 6 π )

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− cos ⁡ ( π 6 ) -\cos\left(\frac{\pi}{6}\right) − cos ( 6 π )

Используя сведения о чётности тригонометрических функций, вычислите cos ⁡ ( − π 4 ) \cos\left(-\frac{\pi}{4}\right) cos ( − 4 π )

2 2 \frac{\sqrt{2}}{2} 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

cos ⁡ ( π 4 ) \cos\left(\frac{\pi}{4}\right) cos ( 4 π )

− 2 2 -\frac{\sqrt{2}}{2} − 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− cos ⁡ ( π 4 ) -\cos\left(\frac{\pi}{4}\right) − cos ( 4 π )

Используя сведения о чётности тригонометрических функций, вычислите cos ⁡ ( − π 3 ) \cos\left(-\frac{\pi}{3}\right) cos ( − 3 π )

cos ⁡ ( π 3 ) \cos\left(\frac{\pi}{3}\right) cos ( 3 π )

− cos ⁡ ( π 3 ) -\cos\left(\frac{\pi}{3}\right) − cos ( 3 π )

Используя сведения о чётности тригонометрических функций, вычислите sin ⁡ ( − π 3 ) \sin\left(-\frac{\pi}{3}\right) sin ( − 3 π )

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− sin ⁡ ( π 3 ) -\sin\left(\frac{\pi}{3}\right) − sin ( 3 π )

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

sin ⁡ ( π 3 ) \sin\left(\frac{\pi}{3}\right) sin ( 3 π )

Используя сведения о чётности тригонометрических функций, вычислите sin ⁡ ( − π 6 ) \sin\left(-\frac{\pi}{6}\right) sin ( − 6 π )

− sin ⁡ ( π 6 ) -\sin\left(\frac{\pi}{6}\right) − sin ( 6 π )

sin ⁡ ( π 6 ) \sin\left(\frac{\pi}{6}\right) sin ( 6 π )

Вычислите sin ⁡ 780 ° \sin\ 780\degree sin 7 8 0 °

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Вычислите sin ⁡ 1080 ° \sin\ 1080\degree sin 1 0 8 0 °

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Вычислите cos ⁡ 690 ° \cos\ 690\degree cos 6 9 0 °

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Вычислите cos ⁡ 300 ° \cos\ 300\degree cos 3 0 0 °

3 2 \frac{\sqrt{3}}{2} 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

− 3 2 -\frac{\sqrt{3}}{2} − 2 3 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Вычислите cos ⁡ 225 ° \cos\ 225\degree cos 2 2 5 °

− 2 2 -\frac{\sqrt{2}}{2} − 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

2 2 \frac{\sqrt{2}}{2} 2 2 <path d="M95,702c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5, -10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8, -50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0, 35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5, -221c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467 s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422 s-65,47,-65,47z M834 80H400000v40H845z">

Синус и косинус - свойства

Authored by Ардаширова Елена

Mathematics

9th - 11th Grade

CCSS covered

Used 322+ times

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17 questions

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MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{4}\right)$

$\frac{\sqrt{2}}{2}$

$-\frac{\sqrt{2}}{2}$

$\sin\left(\frac{\pi}{4}\right)$

$-\sin\left(\frac{\pi}{4}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{6}\right)$

$\frac{\sqrt{3}}{2}$

$-\frac{\sqrt{3}}{2}$

$\cos\left(\frac{\pi}{6}\right)$

$-\cos\left(\frac{\pi}{6}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{4}\right)$

$\frac{\sqrt{2}}{2}$

$-\frac{\sqrt{2}}{2}$

$\cos\left(\frac{\pi}{4}\right)$

$-\cos\left(\frac{\pi}{4}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{3}\right)$

$\frac{1}{2}$

$-\frac{1}{2}$

$\cos\left(\frac{\pi}{3}\right)$

$-\cos\left(\frac{\pi}{3}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{3}\right)$

$\frac{\sqrt{3}}{2}$

$-\frac{\sqrt{3}}{2}$

$\sin\left(\frac{\pi}{3}\right)$

$-\sin\left(\frac{\pi}{3}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE SELECT QUESTION

1 min • 1 pt

Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{6}\right)$

$\frac{1}{2}$

$-\frac{1}{2}$

$-\sin\left(\frac{\pi}{6}\right)$

$\sin\left(\frac{\pi}{6}\right)$

Tags

CCSS.HSF.TF.A.4

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Вычислите $\sin\ 780\degree$

$\frac{1}{2}$

$\frac{\sqrt{3}}{2}$

$-\frac{\sqrt{3}}{2}$

$-\frac{1}{2}$

Tags

CCSS.HSF.TF.A.4

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Вычислите $\sin\ 1080\degree$

$0$

$\frac{\sqrt{3}}{2}$

$-\frac{\sqrt{3}}{2}$

$1$

Tags

CCSS.HSF.TF.C.9

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Вычислите $\sin\ 150\degree$

$0$

$\frac{1}{2}$

$-\frac{1}{2}$

$1$

Tags

CCSS.HSF.TF.A.2

10.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Вычислите $\cos\ 690\degree$

$0$

$\frac{\sqrt{3}}{2}$

$-\frac{\sqrt{3}}{2}$

$1$

Tags

CCSS.HSF.TF.A.4

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Синус и косинус - свойства

Используя сведения о чётности тригонометрических функций, вычислите sin⁡(−π4)\sin\left(-\frac{\pi}{4}\right)sin(−4π​)

Используя сведения о чётности тригонометрических функций, вычислите cos⁡(−π6)\cos\left(-\frac{\pi}{6}\right)cos(−6π​)

Используя сведения о чётности тригонометрических функций, вычислите cos⁡(−π4)\cos\left(-\frac{\pi}{4}\right)cos(−4π​)

Используя сведения о чётности тригонометрических функций, вычислите cos⁡(−π3)\cos\left(-\frac{\pi}{3}\right)cos(−3π​)

Используя сведения о чётности тригонометрических функций, вычислите sin⁡(−π3)\sin\left(-\frac{\pi}{3}\right)sin(−3π​)

Используя сведения о чётности тригонометрических функций, вычислите sin⁡(−π6)\sin\left(-\frac{\pi}{6}\right)sin(−6π​)

Вычислите sin⁡ 780°\sin\ 780\degreesin 780°

Вычислите sin⁡ 1080°\sin\ 1080\degreesin 1080°

Вычислите sin⁡ 150°\sin\ 150\degreesin 150°

Вычислите cos⁡ 690°\cos\ 690\degreecos 690°

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Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{4}\right)$

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{6}\right)$

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{4}\right)$

Используя сведения о чётности тригонометрических функций, вычислите $\cos\left(-\frac{\pi}{3}\right)$

Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{3}\right)$

Используя сведения о чётности тригонометрических функций, вычислите $\sin\left(-\frac{\pi}{6}\right)$

Вычислите $\sin\ 780\degree$

Вычислите $\sin\ 1080\degree$

Вычислите $\sin\ 150\degree$

Вычислите $\cos\ 690\degree$